<script>
    import { h } from 'vue';

    export default {
        data() {
            return {
                counter: 0
            }
        },

        render() {
            return h("div", {class: "app"}, [
                h("h2", null, `当前计数: ${this.counter}`),
                h("button", {
                    onClick: () => this.counter++
                }, "+1"),
                h("button", {
                    onClick: () => this.counter--
                }, "-1"),
            ])
        }        
    }
</script>

<style scoped>

</style>